[frontend] more checks to events model

Author: ar2rsawseen

frontend/express/public/javascripts/countly/countly.event.js

@@ -1247,23 +1247,28 @@
                             type: "GET",
                             url: countlyCommon.API_PARTS.data.r,
                             data: {
-                                "app_id": countlyCommon.ACTIVE_APP_ID,
+                                "app_id": appId,
                                 "method": "get_event_groups",
-                                "preventRequestAbort": true
+                                "preventRequestAbort": true,
+                                "timestamp": +new Date()
                             },
                             dataType: "json",
                             success: function(groups_json) {
-                                for (var group in groups_json) {
-                                    if (groups_json[group].status) {
-                                        data.list.push(groups_json[group]._id);
-                                        data.segments[groups_json[group]._id] = groups_json[group].source_events;
-                                        data.map = data.map || {};
-                                        data.map[groups_json[group]._id] = {
-                                            name: groups_json[group].name,
-                                            count: groups_json[group].display_map.c,
-                                            sum: groups_json[group].display_map.s,
-                                            dur: groups_json[group].display_map.d
-                                        };
+                                if (groups_json) {
+                                    for (var group in groups_json) {
+                                        if (groups_json[group].status) {
+                                            data.list = data.list || [];
+                                            data.list.push(groups_json[group]._id);
+                                            data.segments = data.segments || {};
+                                            data.segments[groups_json[group]._id] = groups_json[group].source_events;
+                                            data.map = data.map || {};
+                                            data.map[groups_json[group]._id] = {
+                                                name: groups_json[group].name,
+                                                count: groups_json[group].display_map.c,
+                                                sum: groups_json[group].display_map.s,
+                                                dur: groups_json[group].display_map.d
+                                            };
+                                        }
                                     }
                                 }
                                 results.push(data);